<script setup name="Person" lang="ts">
import {ref} from "vue";

// 创建一个 title2，用于存储 ref 标记的内容
let title2 = ref();
let a = ref(0)
let b = ref(1)
let c = ref(2)

function showLog() {
  console.log(title2.value);
}

defineExpose({a, b, c})
</script>

<template>
  <div class="person">
    <h1>中国</h1>
    <h2 ref="title2">北京</h2>
    <h3>朝阳</h3>
    <button @click="showLog">点我输出h2这个元素</button>
  </div>
</template>

<style scoped>
.person {
  background-color: skyblue;
  box-shadow: 0 0 10px #000;
  border-radius: 10px;
  padding: 20px;
}

button {
  margin: 0 5px;
}

li {
  font-size: 20px;
}
</style>
